Question

我需要在输出后用jq过滤器提取：

id:1022 mname:P1 target:host.domain.com pname:P1A xnode:1

所有在#部分中以xstart开头的pname的对象都应该从processig中忽略。

输入json是：

{
  "id": 1022,
  "mname": "P1",
  "attrib": [
    {
      "id": 1,
      "name": "log",
      "value": "1"
    },
    {
      "id": 622,
      "name": "target",
      "value": "host.domain.com"
    },
    {
      "id": 623,
      "name": "iddle",
      "value": "30"
    }
  ],
  "xstart": [
    {
      "id": 1021,
      "pname": "P1A",
      "attrib": [
        {
          "id": 530,
          "name": "xnode",
          "value": "1"
        },
        {
          "id": 498,
          "name": "remote",
          "value": "1"
        }
      ]
    },
    {
      "id": 1022,
      "pname": "#P1C",
      "attrib": [
        {
          "id": 530,
          "name": "xnode",
          "value": "2"
        },
        {
          "id": 498,
          "name": "remote",
          "value": "1"
        }
      ]
    }
  ]
}

Answer 1

jq 解决方案：

jq -r '"id:" + (.id|tostring) + " mname:" + .mname 
       + " target:" + (.attrib[] | select(.name == "target").value) 
       + " pname:" + (.xstart[] | select(.pname | startswith("#") | not) as $x | $x.pname 
       + " xnode:" + ($x.attrib[] | select(.name=="xnode").value))' input.json

输出：

id:1022 mname:P1 target:host.domain.com pname:P1A xnode:1

Answer 2

由于需求主要是隐式指定的，因此很难推断它们，但以下内容可能非常接近，并且无论如何都说明了一些有用的技术，例如{{1}的以下定义中体现的功能的抽象。 }：

kv

输出

使用给定的输入和def kv: [to_entries[] | "\(.key):\(.value)" ] | join(" "); .attrib |= map(select(.name == "target")) | .xstart |= map( select(has("pname") and (.pname | startswith("#") | not))) | {id, mname, target: "host.domain.com"} + (.xstart[] | .pname as $pname | .attrib[] | {pname: $pname} + {(.name): .value}) | kv命令行选项的使用，输出将为：

-r

忽略一些对象的json过滤

2 个答案:

输出